Im trying to change the default logo (applications logo). I’ve pretty much changed ever image of this logo I could find in the system and replaced it with my image but I guess I didnt find all of them.
Finally found it.
You need to change the start-here.png image located in the /usr/share/icons folder. Find your theme and change the image. Note there might be several start-here.png images, I just changed them all. That did the trick.